Ireland's Longitude Licensing Ltd and Luxembourg's Longitude Flash Memory Systems S.a.r.l. have filed a joint patent infringement lawsuit against Apple. The lawsuit involves a whopping 13 counts of infringement covering most iDevices and iPod models. The plaintiffs are using former SanDisk patents that they now own against Apple. On longitude's "About" page they note that they recently partnered with Conversant Intellectual Property Management Inc. ("Conversant") to assist in maximizing the value of our intellectual property. Interesting to note that Core Wireless sued Apple earlier this month and they're a wholly owned subsidiary of Conversant. So it's becoming quite evident that this super-patent troll has Apple in their crosshairs. With patents in hand from SanDisk and Nokia, Conversant and their partners will certainly be keeping Apple legal busy for some time.